Sampling device, battery and electric equipment

Abstract

The embodiment of the utility model provides a sampling device, a battery and electric equipment. The sampling device comprises a sampler which is arranged on the outer surface of the single battery and is used for sampling the single battery; and the connecting part is used for connecting the sampler and the electrode terminal of the battery monomer. According to the technical scheme, the single battery can be accurately and effectively sampled, the working state of the single battery can be monitored in real time, and the abnormal condition of the single battery can be processed in time, so that the safety of the battery is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a sampling device, a battery and an electric equipment. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. In this case, electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for its development.

[0003] In the development of battery technology, in addition to improving the performance of the battery, the safety problem is also a problem that cannot be ignored. If the safety problem of the battery cannot be guaranteed, the battery cannot be used. Therefore, how to enhance the safety of the battery is a technical problem to be solved in the battery technology. SUMMARY

[0004] The present application provides a sampling device, a battery and an electric equipment. The battery monomer can be accurately and effectively sampled, the working state of the battery monomer can be monitored in real time, and the abnormal condition of the battery monomer can be handled in time, so as to improve the safety of the battery.

[0005] In a first aspect, a sampling device is provided, comprising: a sampler, the sampler is arranged on the outer surface of the battery monomer, and is used for sampling the battery monomer; a connecting component, the connecting component is used for connecting the sampler and the electrode terminal of the battery monomer.

[0006] The sampling device provided by the embodiment of the present application comprises a sampler and a connecting component. The sampler is arranged on the outer surface of the battery monomer, and the connecting component connects the sampler and the electrode terminal of the battery monomer. In the technical scheme of the present application, the sampler is arranged on the outer surface of the battery monomer to sample the single battery monomer. On the one hand, the connecting distance of the connecting component can be reduced, and the cost can be saved. On the other hand, the sampler is arranged on the outer surface of the battery monomer, the wiring between the battery monomer and the sampler is reduced, the coupling interference between the lines is reduced, the working condition information of the single battery monomer can be accurately obtained, the working state of the battery monomer can be monitored in real time, the abnormal condition of the battery monomer can be handled in time, and the safety of the battery can be improved.

[0007] In a possible implementation manner, the connecting component comprises a connector and a wire, the connector connects the sampler, and the wire connects the connector and the electrode terminal.

[0008] The connector is used to realize the electrical connection between the wire and the sampler. Since the connection between the connector and the sampler is more easy to operate and more firm, the reliability and stability of the electrical connection between the wire and the sampler are improved.

[0009] In a possible implementation, the connector comprises a connecting part, and the connecting part is connected with the first end of the wire.

[0010] In a possible implementation, the connecting part is connected with the first end of the wire by piercing the insulating layer of the wire.

[0011] The connecting part is connected with the wire by piercing the insulating layer of the wire, so as to realize the electrical connection between the connector and the wire.

[0012] In a possible implementation, the connector comprises a first pin, and the sampler comprises a second pin, and the first pin is connected with the second pin.

[0013] The first pin of the connector is connected with the second pin of the sampler, so as to realize the electrical connection between the connector and the sampler.

[0014] In a possible implementation, the first pin is connected with the second pin by welding.

[0015] The first pin is connected with the second pin by welding, which is easy to operate, firm in connection, and ensures the effectiveness of the electrical connection between the connector and the sampler.

[0016] In a possible implementation, the second end of the wire is connected with the electrode terminal by welding.

[0017] The second end of the wire is connected with the electrode terminal by welding, which is easy to operate, firm in connection, and ensures the effectiveness of the electrical connection between the wire and the electrode terminal.

[0018] In a possible implementation, the connector further comprises a fixing column, and the sampler further comprises a fixing hole, and the fixing column is inserted into the fixing hole to fix the connector to the sampler.

[0019] The fixing column of the connector is matched and inserted into the fixing hole of the sampler, so as to fix the sampler and avoid the influence of the positional deviation of the sampler on the electrical connection between the sampler and the connector, thereby affecting the accuracy of sampling.

[0020] In a possible implementation, the fixing column is a plastic column.

[0021] The plastic has the advantages of wear resistance and insulation, and the plastic column can ensure the stability of the insertion into the fixing hole and also insulate the sampler, thereby avoiding the influence on the accuracy of sampling.

[0022] In a possible implementation, the sampler is arranged on the outer surface of the end cover of the battery monomer.

[0023] The end cover of the battery cell is separated from the shell of the battery cell, and the sampler is arranged on the outer surface of the end cover, which is easy to process and operate.

[0024] In a possible implementation, a projection of the connecting component on a plane in which the outer surface of the end cover of the battery cell is located does not exceed the outer surface of the end cover of the battery cell.

[0025] In this way, the length of the wire in the connecting component can be reduced, and cost can be saved; and the wires of the connecting components between the plurality of battery cells can be prevented from being close to each other to generate coupling interference, and the accuracy of sampling can be prevented from being affected.

[0026] In a possible implementation, the sampler is arranged between the two electrode terminals.

[0027] The sampler is arranged between the two electrode terminals, so that the length of the wire can be reduced to the greatest extent, and cost can be saved.

[0028] In a possible implementation, the sampler is provided with a wireless communication module, and the wireless communication module is configured to transmit the sampling information of the battery cell.

[0029] The wireless communication module is used to transmit the sampling information of the battery cell, and has high flexibility, low power consumption, high stability, and high reliability.

[0030] In a second aspect, a battery is provided, including: a battery cell and the sampling device in the first aspect and any possible implementation of the first aspect.

[0031] In a third aspect, a use-electricity device is provided, including: the battery in the second aspect and any possible implementation of the second aspect, and the battery is configured to provide electric energy for the use-electricity device.

[0032] In the technical solution of the present application, the sampling device includes a sampler and a connecting component, the sampler is arranged on the outer surface of the battery cell, and the connecting component connects the sampler and the electrode terminal of the battery cell. The sampler is arranged on the outer surface of the battery cell to sample a single battery cell. On one hand, the sampler arranged on the outer surface of the battery cell can reduce the connection distance of the connecting component and save cost; on the other hand, the sampler arranged on the outer surface of the battery cell can reduce the wiring between the battery cell and the sampler and reduce the coupling interference between the lines, so that the working condition information of the single battery cell can be accurately obtained, the working state of the battery cell can be monitored in real time, and the abnormal condition of the battery cell can be processed in time, thereby improving the safety of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the drawings.

[0034] Figure 1 is a structural schematic diagram of a vehicle according to an embodiment of the present application;

[0035] Figure 2 is a structural schematic diagram of a battery according to an embodiment of the present application;

[0036] Figure 3 is a structural schematic diagram of a battery cell according to an embodiment of the present application;

[0037] Figure 4 is a structural schematic diagram of a sampling device according to an embodiment of the present application;

[0038] Figure 5 is an enlarged view of part A in Figure 4

[0039] Figure 6 is a front view of part B in Figure 5

[0040] In the drawings, the drawings are not drawn according to the actual scale. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be further described in detail below in conjunction with the drawings and examples. The detailed description of the following examples and drawings are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0042] In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "a plurality of" is more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error.

[0043] ​​The directional terms appearing in the following description are the directions shown in the drawings and are not intended to limit the specific structure of the present application. In the description of the present application, it should be further pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] The term "and / or" in the present application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents that the front and rear associated objects have an "or" relationship.

[0045] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as understood by those skilled in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application; the terms "including" and "having" in the specification and claims of the present application and their any variants are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish different objects, and are not intended to describe a specific order or primary and secondary relationship.

[0046] In the present application, referring to "embodiments" means that the specific features, structures or characteristics described in conjunction with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0047] In the present application, the battery refers to a physical module including one or more battery monomers to provide electrical energy. For example, the battery mentioned in the present application can include a battery module or a battery pack, etc. The battery generally includes a box for packaging one or more battery monomers. The box can avoid the influence of liquid or other foreign matters on the charging or discharging of the battery monomers.

[0048] Optionally, the battery monomer can include a lithium ion secondary battery, a lithium ion primary battery, a lithium-sulfur battery, a sodium lithium ion battery, a sodium ion battery or a magnesium ion battery, etc., and the embodiments of the present application are not limited thereto. In some embodiments, the battery monomer can also be referred to as an electric cell.

[0049] The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector without the positive electrode active material layer protrudes from the current collector with the positive electrode active material layer, and the current collector without the positive electrode active material layer serves as a positive electrode tab. Taking a lithium ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium, or lithium manganate, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector without the negative electrode active material layer protrudes from the current collector with the negative electrode active material layer, and the current collector without the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that the fuse does not occur when passing a large current, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the separator can be polypropylene (PP) or polyethylene (PE), etc. In addition, the electrode assembly can be a winding type structure or a stacking type structure, and the embodiments of the present application are not limited thereto.

[0050] In order to meet different power demands, a plurality of battery cells in the battery can be connected in series, parallel, or mixed connection, wherein the mixed connection refers to a mixture of series connection and parallel connection. Alternatively, a plurality of battery cells can be connected in series, parallel, or mixed connection to form a battery module, and a plurality of battery modules are connected in series, parallel, or mixed connection to form a battery. That is, a plurality of battery cells can directly form a battery, or can first form a battery module, and the battery module forms a battery. The battery is further arranged in a power consumption device to provide power for the power consumption device.

[0051] At present, from the development of market situation, the application of power battery is more and more widely. The power battery is not only applied to energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, as well as military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the market demand is also increasing.

[0052] The development of battery technology needs to consider many design factors, not only the performance parameters such as energy density, cycle life, discharge capacity, and charge-discharge rate, but also the safety of the battery. This requires real-time monitoring of the working condition of the battery during use, so as to handle abnormal conditions of the battery in time and improve the safety of the battery.

[0053] In the prior art, the electrodes of a plurality of battery monomers are connected with FPC and wire harnesses, and the plurality of battery monomers are sampled. Since the electrodes of each battery monomer need to be connected with FPC and wire harnesses, the wire harnesses between the plurality of battery monomers will be coupled and interfere with each other, affecting the accuracy of the sampling information.

[0054] In view of this, the embodiments of the present application provide a sampling device, which comprises a sampler and a connecting component. The sampler is arranged on the outer surface of a battery monomer, and the connecting component connects the sampler and the electrode terminal of the battery monomer. In the technical solution of the present application, the sampler is arranged on the outer surface of the battery monomer to sample a single battery monomer. On the one hand, the sampler arranged on the outer surface of the battery monomer can reduce the connection distance of the connecting component and save costs. On the other hand, the sampler arranged on the outer surface of the battery monomer reduces the wiring between the battery monomer and the sampler and reduces the coupling interference between the lines, so that the working condition information of a single battery monomer can be accurately obtained, the working state of the battery monomer can be monitored in real time, and the abnormal condition of the battery monomer can be processed in time, thereby improving the safety of the battery.

[0055] The sampling devices described in the embodiments of the present application are applicable to various battery monomers, batteries and electric devices using the batteries sampled by the sampling devices. The electric device can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy and an electric tool, etc. The vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. The spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator and an electric planer, etc. The embodiments of the present application do not specially limit the above electric devices.

[0056] The following embodiments take the vehicle as an example for convenience of description.

[0057] For example, as shown in FIG. 1, the vehicle comprises a battery pack 1, a motor 2, a controller 3 and a plurality of battery monomers 4. The battery pack 1 is connected with the motor 2 and the controller 3. The plurality of battery monomers 4 are connected with the battery pack 1. The battery pack 1 is connected with the motor 2 and the controller 3 to provide power for the motor 2 and the controller 3. Figure 1The diagram shown is a structural schematic of a vehicle 1 according to one embodiment of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A motor 40, a controller 30, and a battery 10 can be installed inside vehicle 1. The controller 30 controls the battery 10 to supply power to the motor 40. For example, the battery 10 can be installed at the bottom, front, or rear of vehicle 1. The battery 10 can be used to power vehicle 1; for example, it can serve as the operating power source for the vehicle 1's electrical system, such as for the power requirements of starting, navigation, and operation. In another embodiment of this application, the battery 10 can not only serve as the operating power source for vehicle 1 but also as the driving power source, replacing or partially replacing gasoline or natural gas to provide driving power to vehicle 1.

[0058] Battery 10 may include multiple battery cells. For example, such as Figure 2 The diagram shown is a structural schematic of a battery 10 according to an embodiment of this application. The battery 10 may include at least one battery module 200. The battery module 200 includes multiple battery cells 20. The battery 10 may also include a housing 11, which has a hollow interior structure, and the multiple battery cells 20 are housed within the housing 11. Figure 2 As shown, the housing 11 may include two parts, referred to herein as the first part 111 (upper housing) and the second part 112 (lower housing), which are fastened together. The shapes of the first part 111 and the second part 112 may be determined according to the shape of the combination of multiple battery cells 20, and at least one of the first part 111 and the second part 112 may have an opening. For example, as... Figure 2 As shown, both the first part 111 and the second part 112 can be hollow cuboids, each with only one open face. The openings of the first part 111 and the second part 112 are opposite to each other, and the first part 111 and the second part 112 interlock to form a box 11 with a closed cavity. For example, unlike... Figure 2 As shown, in the first part 111 and the second part 112, only one can be a hollow cuboid with an opening, while the other can be plate-shaped to cover the opening. For example, if the second part 112 is a hollow cuboid with only one open side, and the first part 111 is plate-shaped, then the first part 111 covers the opening of the second part 112 to form a box with a closed cavity, which can be used to accommodate multiple battery cells 20. After the multiple battery cells 20 are connected in parallel, series, or mixed, they are placed inside the box 11 formed by the first part 111 and the second part 112.

[0059] The number of battery cells 20 can be set to any value depending on different power requirements. Multiple battery cells 20 can be connected in series, parallel, or a combination thereof to achieve a larger capacity or power. Since each battery 10 may contain a large number of battery cells 20, for ease of installation, the battery cells 20 can be grouped, with each group of battery cells 20 forming a battery module. The number of battery cells 20 included in a battery module is unlimited and can be set according to requirements. A battery can include multiple battery modules, which can be connected in series, parallel, or a combination thereof.

[0060] like Figure 3 The diagram shown is a structural schematic of a battery cell 20 according to an embodiment of this application. The battery cell 20 includes one or more electrode assemblies 22, a housing 211, and an end cap 212. The housing 211 and the end cap 212 form a casing or battery box 21. The walls of the housing 211 and the end cap 212 are both referred to as the walls of the battery cell 20. For a cuboid battery cell 20, the walls of the housing 211 include a bottom wall and four side walls. The shape of the housing 211 depends on the shape of the assembled one or more electrode assemblies 22. For example, the housing 211 can be a hollow cuboid, cube, or cylinder, and one face of the housing 211 has an opening so that one or more electrode assemblies 22 can be placed inside the housing 211. For example, when the housing 211 is a hollow cuboid or cube, one plane of the housing 211 is an open face, that is, this plane does not have a wall, allowing communication between the inside and outside of the housing 211. When the housing 211 can be a hollow cylinder, the end face of the housing 211 is an open face, that is, the end face does not have a wall, allowing the inside and outside of the housing 211 to communicate. The end cap 212 covers the opening and is connected to the housing 211 to form a closed cavity for placing the electrode assembly 22. The housing 211 is filled with an electrolyte, such as an electrolyte solution.

[0061] The battery cell 20 may also include two electrode terminals 214, which may be disposed on the end cap 212. The end cap 212 is typically flat, and the two electrode terminals 214 are fixed to the flat surface of the end cap 212. The two electrode terminals 214 are respectively a positive electrode terminal 214a and a negative electrode terminal 214b. Each electrode terminal 214 is provided with a corresponding connecting member 23, or a current collector 23, which is located between the end cap 212 and the electrode assembly 22, and is used to electrically connect the electrode assembly 22 and the electrode terminal 214.

[0062] like Figure 3As shown, each electrode assembly 22 has a first tab 221a and a second tab 222a. The polarity of the first tab 221a and the second tab 222a is opposite. For example, when the first tab 221a is a positive electrode tab, the second tab 222a is a negative electrode tab. The first tab 221a of one or more electrode assemblies 22 is connected to one electrode terminal through one connecting member 23, and the second tab 222a of one or more electrode assemblies 22 is connected to another electrode terminal through another connecting member 23. For example, the positive electrode terminal 214a is connected to the positive electrode tab through one connecting member 23, and the negative electrode terminal 214b is connected to the negative electrode tab through another connecting member 23.

[0063] In the battery cell 20, the electrode assembly 22 can be arranged as a single or multiple according to actual use requirements. Figure 3 As shown, four independent electrode assemblies 22 are arranged in the battery cell 20.

[0064] The battery cell 20 can also be provided with a pressure relief mechanism 213. The pressure relief mechanism 213 is used to actuate to release the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 reaches a threshold value.

[0065] The pressure relief mechanism 213 can be various possible pressure relief structures, and the embodiments of the present application are not limited thereto. For example, the pressure relief mechanism 213 can be a temperature-sensitive pressure relief mechanism configured to melt when the internal temperature of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value; and / or, the pressure relief mechanism 213 can be a pressure-sensitive pressure relief mechanism configured to break when the internal air pressure of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value.

[0066] Figure 4 A sampling device 30 according to an embodiment of the present application is shown, which includes a sampler 31 and a connecting member 32. The sampler 31 is arranged on the outer surface of the battery cell 20 and is connected to the electrode terminal 214 of the battery cell 20 through the connecting member 32 to sample the battery cell 20.

[0067] The sampler 31 samples the battery cell 20 to obtain the voltage, current, temperature and other information of the battery cell 20 to monitor the working state of each battery cell 20 in real time. The sampler 31 can be fixed on the outer surface of the battery cell 20 by welding, gluing and other connection methods, which are not limited by the present application.

[0068] In the embodiments of the present application, the sampler 31 is arranged on the outer surface of the battery monomer 20 to sample the single battery monomer 20, and the sampler 31 is arranged on the outer surface of the end cover 212 of the battery monomer 20. On the one hand, the connection distance of the connecting component 32 can be reduced to save the cost. On the other hand, the wiring between the battery monomer 20 and the sampler 31 can be reduced to reduce the coupling interference between the lines, so that the working condition information of the single battery monomer 20 can be accurately obtained, the working state of the battery monomer 20 can be monitored in real time, and the abnormal condition of the battery monomer 20 can be processed in time, thereby improving the safety of the battery 10.

[0069] Optionally, in the embodiments of the present application, as shown in Figure 4 the sampler 31 is arranged on the outer surface of the end cover 212 of the battery monomer 20.

[0070] The end cover 212 of the battery monomer 20 is generally separated from the shell 211 of the battery monomer 20, and the sampler 31 is arranged on the outer surface of the end cover 212, which is easy to process and convenient to operate. In addition, the electrode terminal 214 of the battery monomer 20 is generally arranged on the end cover 212, and the sampler 31 is arranged on the outer surface of the end cover 212, so that the distance between the sampler 31 and the electrode terminal 214 can be reduced to reduce the length of the connecting component 32 and save the cost.

[0071] It should be understood that Figure 4 the sampler 31 arranged on the outer surface of the end cover 212 of the battery monomer 20 shown in the figure is only an exemplary schematic diagram of the present application, and does not constitute a limitation on the present application. The sampler 31 can be arranged on any outer surface of the battery monomer 20 according to the actual situation.

[0072] Optionally, in the embodiments of the present application, as shown in Figure 4 the projection of the connecting component 32 on the plane where the outer surface of the end cover 212 of the battery monomer 20 is located does not exceed the outer surface of the end cover 212 of the battery monomer 20.

[0073] In this way, the length of the connecting component 32 can be reduced to save the cost, and the coupling interference between the connecting components 32 of the plurality of battery monomers 20 can be avoided to avoid affecting the accuracy of sampling.

[0074] Optionally, in the embodiments of the present application, as shown in Figure 4 the sampler 31 is arranged between the two electrode terminals 214. The sampler 31 arranged between the two electrode terminals 214 can minimize the length of the connecting component 32 to save the cost.

[0075] It should be understood that Figure 4The sampler 31 shown is arranged between the two electrode terminals 214, which is only an exemplary schematic diagram of the present application and does not constitute a limitation on the present application. The sampler 31 can also be arranged on one side of any electrode terminal 214.

[0076] Optionally, in the embodiment of the present application, as shown, Figure 4 The connecting component 32 includes a connector 321 and a wire 322. The connector 321 is connected to the sampler 31, and the wire 322 connects the connector 321 and the electrode terminal 214.

[0077] The connector 321 refers to an electronic device with the functions of transmitting signals and connecting currents. For example, it can be an IDC connector, a Type-C connector, a USB connector, etc., which is not limited in the present application.

[0078] The connector 321 is used to realize the electrical connection between the wire 322 and the sampler 311. Since the connection between the connector 321 and the sampler 31 is more operable and more secure, the reliability and stability of the electrical connection between the wire 322 and the sampler 31 are improved.

[0079] Optionally, in the embodiment of the present application, the connecting component 32 can only include the wire 322, which connects the sampler 31 and the electrode terminal 214. The wire 322 and the sampler 31 can be connected by welding.

[0080] Optionally, in the embodiment of the present application, as shown, Figure 5 The connector 321 includes a first pin 3212, and the sampler 31 includes a second pin 311. The first pin 3212 is connected to the second pin 311.

[0081] The first pin 3212 of the connector 321 is connected to the second pin 311 of the sampler 31 to realize the electrical connection between the connector 321 and the sampler 31.

[0082] Optionally, in the embodiment of the present application, the first pin 3212 and the second pin 311 are welded.

[0083] The first pin 3212 and the second pin 311 are connected by welding, which is easy to operate and secure, and ensures the effectiveness of the electrical connection between the connector 321 and the sampler 31.

[0084] Optionally, in the embodiment of the present application, the first pin 3212 and the second pin 311 are connected by plugging. When the first pin 3212 and the second pin 311 are connected by plugging, the connector 321 and the sampler 31 are easy to disconnect. When the sampler 31 fails, the sampler 31 can be easily removed and replaced.

[0085] Optionally, in the embodiment of the present application, as shown,Figure 6 As shown in the figure, the connector 321 comprises a connecting portion 3211 which is connected with the first end of the wire 322. The connecting portion 3211 is connected with the first end of the wire 322 to realize the electrical connection between the connector 321 and the wire 322.

[0086] Optionally, in the embodiment of the present application, the connecting portion 3211 is connected with the wire 322 by piercing the insulating layer of the first end of the wire 322.

[0087] The connecting portion 3211 is connected with the wire 322 by piercing the insulating layer of the wire 322 to realize the electrical connection between the connector 321 and the wire 322.

[0088] Optionally, in the embodiment of the present application, the second end of the wire 322 is welded with the electrode terminal 214.

[0089] The second end of the wire 322 is connected with the electrode terminal 214 by welding, which is easy to operate, firm in connection and ensures the effectiveness of the electrical connection between the wire 322 and the electrode terminal 214.

[0090] Optionally, in the embodiment of the present application, as shown in the figure, Figure 6 The connector 321 further comprises a fixing column 3213, and the sampler 31 further comprises a fixing hole 312, the fixing column 3213 is inserted into the fixing hole 312 to fix the connector 321 to the sampler 31.

[0091] The fixing column 3213 of the connector 321 is matched and inserted into the fixing hole 312 of the sampler 31 to fix the sampler 31 and avoid the influence of the positional deviation of the sampler 31 on the electrical connection between the sampler 31 and the connector 321 and the accuracy of the sampling.

[0092] Optionally, in the embodiment of the present application, the fixing column 3213 is a plastic column.

[0093] The plastic has the advantages of wear resistance and insulation, the plastic column can ensure the stability of the insertion into the fixing hole 312 and is insulated from the sampler 31 to avoid affecting the accuracy of the sampling.

[0094] It should be understood that the fixing column 3213 can also be made of other materials which do not affect the performance of the battery monomer 20 and the sampling accuracy, such as a composite material of an insulating material coated with a metal material, and the present application does not limit this.

[0095] Optionally, in the embodiment of the present application, the fixing column 3213 of the connector 321 can also be fixed to the sampler 31 by welding, gluing, riveting and other connection methods to realize the fixation of the connector 321, and the present application does not limit this.

[0096] Optionally, in the embodiments of the present application, the connector 321 can also be fixed to the outer surface of the battery monomer 20. For example, when the sampler 31 is arranged on the outer surface of the end cover 212 of the battery monomer 20, the connector 321 is fixed to the outer surface of the end cover 212 of the battery monomer 20. The connector 321 can be fixed to the outer surface of the battery monomer 20 by welding, gluing, riveting or other connection methods, which are not limited in the present application.

[0097] Optionally, in the embodiments of the present application, the sampler 31 is provided with a wireless communication module, which is used to transmit the sampling information of the battery monomer 20.

[0098] Specifically, the wireless communication module can transmit the sampling information of the battery monomer 20 to the battery management system BMS. The wireless communication module can use 3G / 4G / 5G / ETH or other wireless communication methods to transmit the battery information to the battery management system BMS.

[0099] The wireless communication module is used to transmit the sampling information of the battery monomer 20, which has high flexibility, low power consumption, high stability and high reliability.

[0100] According to some embodiments of the present application, referring to Figure 4 , Figure 5 and Figure 6 , the present application provides a sampling device 30, which comprises a sampler 31 and a connecting component 32. The sampler 31 is arranged on the outer surface of the battery monomer 20, and is connected to the electrode terminal 214 of the battery monomer 20 through the connecting component 32 to sample the battery monomer 20, and the sampling information of the battery monomer 20 obtained is transmitted through the wireless communication module of the sampler 31. Specifically, the connecting component 32 can include a connector 321 and a wire 322, the connector 321 is connected to the sampler 31, and the wire 322 is connected to the connector 321 and the electrode terminal 214. The connecting part 3211 of the connector 321 is clamped with the first end of the wire 322; the first pin 3212 of the connector 321 is connected to the second pin 311 of the sampler 31; the second end of the wire 322 is welded to the electrode terminal 214; so as to realize the electrical connection between the electrode terminal 214 and the sampler 31, so that the sampler 31 samples the battery monomer 20.

[0101] The embodiments of the present application also provide a battery 10, which comprises a battery monomer 20 and a sampling device 30 as described in any of the above embodiments.

[0102] The embodiments of the present application also provide a power consumption device. The power consumption device comprises the battery 10 in the above embodiments, and the battery 10 is used to provide electric energy. Optionally, the power consumption device can be a vehicle 1, a ship or a spacecraft, but the embodiments of the present application are not limited thereto.

[0103] Although the present application has been described with reference to preferred embodiments, various modifications can be made to the application without departing from the scope of the application. In particular, the technical features mentioned in the various embodiments can be combined in any way, provided that there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sampling device (30) characterized by, The sampling device (30) comprises: a sampler (31) arranged on an outer surface of a battery cell (20), the sampler (31) being arranged on an outer surface of an end cover (212) of the battery cell (20) and configured to sample the battery cell (20); a connecting component (32) configured to connect the sampler (31) and an electrode terminal (214) of the battery cell (20).

2. The sampling device (30) according to claim 1, characterized in that The connecting component (32) comprises a connector (321) connected to the sampler (31) and a wire (322) connected to the connector (321) and the electrode terminal (214).

3. The sampling device (30) according to claim 2, characterized in that The connector (321) comprises a connecting portion (3211) engaged with a first end of the wire (322).

4. The sampling device (30) according to claim 3, characterized in that The connecting portion (3211) pierces an insulation layer of the first end of the wire (322) and is engaged with the wire (322).

5. The sampling device (30) according to claim 2, characterized in that The connector (321) comprises a first pin (3212), and the sampler (31) comprises a second pin (311), the first pin (3212) being connected to the second pin (311).

6. The sampling device (30) according to claim 5, characterized in that The first pin (3212) is welded to the second pin (311).

7. The sampling device (30) according to claim 2, characterized in that A second end of the wire (322) is welded to the electrode terminal (214).

8. The sampling device (30) according to any one of claims 2 to 7, characterized in that The connector (321) further comprises a fixing column (3213), and the sampler (31) further comprises a fixing hole (312), the fixing column (3213) being inserted into the fixing hole (312) to fix the connector (321) to the sampler (31).

9. The sampling device (30) according to claim 8, characterized in that The fixing column (3213) is a plastic column.

10. The sampling device (30) according to claim 1, characterized in that A projection of the connecting component (32) on a plane in which the outer surface of the end cover (212) of the battery cell (20) is located does not exceed the outer surface of the end cover (212) of the battery cell (20).

11. The sampling device (30) according to any one of claims 1 to 7, characterized in that The sampler (31) is arranged between two electrode terminals (214).

12. The sampling device (30) according to any one of claims 1 to 7, characterized in that The sampler (31) is provided with a wireless communication module configured to transmit sampling information of the battery cell (20).

13. A battery (10) characterized by The sampling device (30) comprises: a battery cell (20); and the sampling device (30) according to any one of claims 1 to 7.

14. An electrical device, characterized by The sampling device (30) comprises: the battery (10) according to claim 13, the battery (10) being configured to provide electric energy.

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